TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 12, 1:00 AM EST
Kalshi
The minimum temperature in Boston on June 11, 2026, will be recorded by the National Weather Service, with the outcome depending on which temperature range is observed.
Resolution is based on the minimum temperature recorded at Boston Logan Airport on June 11, 2026, as reported in the National Weather Service's Climatological Report (Daily). The temperature is divided into six consecutive ranges: 58°F or below, 59-60°F, 61-62°F, 63-64°F, 65-66°F, and 67°F or above. Each range corresponds to a distinct outcome. Data must be obtained from the official NWS source at the specified URL, using the "Observed Weather" tab and selecting Boston Logan Airport with Daily Climate Report. While preliminary NWS data and other weather services may provide guidance, the final resolution value is exclusively determined by the official NWS Climatological Report (Daily). Traders should be aware that preliminary NWS reporting and measurement methods may involve rounding and conversion nuances that could affect the final determination.
Prediction market odds on Kalshi reflect real-money trader expectations for Boston's June 11 low, often incorporating weather models and seasonal climate data faster than traditional analyst consensus. While meteorologists issue multi-day forecasts based on atmospheric modeling, prediction markets aggregate dispersed information from many participants with financial incentives to be accurate. Comparing Kalshi implied probabilities to National Weather Service or private weather service forecasts can reveal where market participants diverge from official predictions.
On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Kalshi, the lowest temperature in Boston on June 11, 2026 is priced as a set of binary or range-based contracts, each representing a specific temperature threshold or band. Traders buy or sell shares reflecting their belief in whether the actual low will fall within that range. Prices move continuously based on order flow, with higher prices indicating greater market confidence in an outcome. The contract structure allows precise temperature forecasting and attracts both weather enthusiasts and algorithmic traders.
The market resolves on Jun 12, 2026. Resolution is determined by the official recorded lowest temperature in Boston on June 11, 2026, typically sourced from National Weather Service data or a designated weather station. Once the date passes and the actual low is confirmed, the outcome is locked in and all positions settle according to which temperature bracket or threshold was correct. Traders should verify the exact data source and measurement methodology specified by Kalshi before the event concludes.
Major weather pattern shifts, updated seasonal forecasts, and atmospheric anomalies can significantly move odds for Boston's June 11 low. Tropical systems, heat domes, or unusual jet stream positioning weeks in advance may alter trader expectations. As June 11 approaches, short-range weather models become more reliable, typically driving larger price swings in the final 10 days. Real-time weather alerts, climate indices, and overnight low forecasts from the National Weather Service will be key catalysts influencing market sentiment closer to the event date.